From 45fe1e4b92cde944f0e63c83596a59bc6071fb93 Mon Sep 17 00:00:00 2001
From: "S.J.R. van Schaik" <stephan@whiteboxsystems.nl>
Date: Mon, 12 Jun 2017 16:48:23 +0200
Subject: [PATCH] mufs: check if directory va does not exceed the file size in
 mufs_readdir()

---
 source/fs/mufs/dir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/fs/mufs/dir.c b/source/fs/mufs/dir.c
index c72c2d0..d4a1edb 100644
--- a/source/fs/mufs/dir.c
+++ b/source/fs/mufs/dir.c
@@ -270,6 +270,9 @@ int mufs_readdir(struct mufs_dir *dir, struct mufs_dirent *dirent)
 
 	dir->va = align_up(dir->va + 1, dir->fs->dev->log2_block_size);
 
+	if (dir->va >= dir->tree->file_size)
+		return -1;
+
 	if ((ret = read_dirent(dir->fs, dir->tree, dirent, dir->va)) > 0) {
 		dir->va += ret;
 		return 0;